| title | developer | year | platform | | pop. |
|---|
| UFO: Afterlight | ALTAR Games | 2007 | Windows | strategy role-play Science Fiction | image | subject | label | |
| UFO: Aftershock | ALTAR Interactive | 2005 | Windows | strategy Science Fiction | image | subject | label | |
| Ukrainian Rumble 2 | Ukrainian Brothers | ? | Linux | shooter | | | label | |
| Ultimate Stunts | author | 2002 | Linux | racing/driving | image | subject | label | |
| Underworld Hockey Club | author | 2011 | Linux | sport | | subject | label | |
| Unknown Horizons | Unknown Horizons Developers | 2009 | Linux | strategy Historical | image | subject | label | |
| Unknown Horizons | Unknown Horizons Developers | 2009 | Windows | strategy Historical | image | | label | |
| Unreal II – The Awakening | Legend Entertainment | 2003 | Windows | shooter Science Fiction | image | | label | |
| Unreal Tournament 2003 | Digital Extremes | 2002 | Windows | 3D | image | subject | label | |
| Unreal Tournament 2003 | Epic Games;Digital Extremes | 2002 | Linux | Science Fiction | | | label | |
| Unreal Tournament 2003 | Digital Extremes | 2002 | Mac OS X | Science Fiction | | | label | |
| Unreal Tournament 2004 | Epic Games;Digital Extremes | 2004 | Windows | Science Fiction | image | subject | label | |
| Unreal Tournament 2004 | Epic Games;Digital Extremes | 2004 | Linux | Science Fiction | | | label | |
| Unreal Tournament 2004 | Epic Games;Digital Extremes | 2004 | Mac OS X | Science Fiction | | | label | |
| Unreal Tournament 3: Black Edition | Epic Games | 2007 | Windows | Science Fiction | | | label | |
| Unreal Tournament III | Epic Games | 2007 | Windows | Science Fiction | image | subject | label | |
| UT2004: SAS | Digital Extremes | ? | Linux | Science Fiction | | | label | |
| Vagante | Nuke Nine | 2018 | Windows | action/reflex platformer Fantasy | image | | label | |
| Veks | Crossbones Studios | ? | Linux | shooter | image | | label | |
| Vigil: Blood Bitterness | Freegamer | 2006 | Windows | adventure Fantasy | image | subject | label | |
| Wacky Sleigh Ride | 3D-Diggers | ? | Linux | racing/driving | | | label | |
| Wanted: Weapons of Fate | GRIN | 2009 | Windows | shooter | image | | label | |
| Wanted: Weapons of Fate | GRIN | 2009 | X360 | shooter | image | | label | |
| Wanted: Weapons of Fate | GRIN | 2009 | PS3 | shooter | image | | label | |
| War Thunder | Gaijin Entertainment | 2012 | Windows | simulation flight | image | subject | label | |
| War Thunder | Gaijin Entertainment | 2014 | Mac OS X | simulation flight | | | label | |
| War§ow | Chasseur De Bots | 2006 | Linux | shooter Science Fiction | image | | label | |
| War§ow | Chasseur De Bots | ? | Windows | shooter Science Fiction | | | label | |
| Warlock's Gauntlet | Warsztat | 2011 | Windows | shooter Fantasy | image | | label | |
| Warmonger | NetDevil | 2007 | Windows | shooter Science Fiction | image | | label | |
| Warspear | AIGRIND | 2014 | Linux | role-play Fantasy | | | label | |
| Warzone 2100 | Pumpkin Studios;The Warzone 2100 Resurrection Project | 2004 | Linux | strategy Science Fiction | image | | label | |
| Warzone 2100 | Pumpkin Studios;The Warzone 2100 Resurrection Project | 2005 | Mac OS X | strategy Science Fiction | | | label | |
| Warzone 2100 | Pumpkin Studios;The Warzone 2100 Resurrection Project | 2005 | Windows | strategy Science Fiction | image | | label | |
| Waterstorm | Rarebyte | 2008 | Windows | action/reflex Science Fiction | | | label | |
| Waterstorm | Rarebyte | 2008 | Mac OS X | action/reflex Science Fiction | | | label | |
| Waterstorm | Rarebyte | 2008 | Linux | action/reflex Science Fiction | | | label | |
| Weird Worlds: Return to Infinite Space | Digital Eel | 2005 | Windows | strategy adventure Science Fiction | image | subject | label | |
| Weird Worlds: Return to Infinite Space | Digital Eel | 2005 | Mac OS X | strategy adventure Science Fiction | image | | label | |
| When It Hits the Fan | Heartfelt Games | 2014 | Linux | | | | label | |
| Windstille | author | ? | Linux | platformer | image | | label | |
| Wings of Dawn | Spoon | 2010 | Linux | shooter simulation Science Fiction | | | label | |
| World of Tanks | Wargaming.net | 2016 | PS4 | shooter simulation Historical | image | | label | |
| World of Tanks | Wargaming.net | 2010 | Windows | shooter simulation Historical | image | subject | label | |
| World of Tanks | Wargaming.net | 2015 | Xbox One | shooter simulation Historical | image | | label | |
| World of Tanks: Xbox 360 Edition | Wargaming.net | 2014 | X360 | shooter simulation Historical | image | | label | |
| Worlds | Curious Planet | 2016 | Linux | action/reflex adventure | | | label | |
| X²: The Threat | Egosoft;Linux Game Publishing | 2006 | Linux | action/reflex simulation flight manag./econ. Science Fiction | image | subject | label | |
| X²: The Threat | Egosoft | 2003 | Windows | action/reflex simulation flight manag./econ. Science Fiction | | | label | |
| X³: Reunion | Egosoft | ? | Mac OS X | action/reflex simulation flight manag./econ. adventure Science Fiction | | | label | |
| X³: Reunion | Egosoft;Linux Game Publishing;Streamline Studios | 2008 | Linux | action/reflex simulation flight manag./econ. adventure Science Fiction | image | subject | label | |
| Xenotake | Vosmug | 2014 | Windows | action/reflex Manga | image | | label | |
| XPilot NG | author | ? | Linux | shooter Science Fiction | | | label | |
| Xut | DNTeam | ? | Linux | simulation sport | | | label | |
| Xut | ? | ? | BeOS | simulation sport | | | label | |
| You Are Empty | Digital Spray Studios;Mandel ArtPlains | 2006 | Windows | shooter Horror | image | subject | label | |
| You Still Won’t Make It | Vetra Games | 2013 | Linux | platformer | | | label | |
| Zero-K | author | 2012 | Linux | strategy Science Fiction | | | label | |
| Zombie Driver | Exor Studios | 2009 | Windows | action/reflex racing/driving | image | | label | |
